CN203572836U - Magnetoelectric revolution meter - Google Patents
Magnetoelectric revolution meter Download PDFInfo
- Publication number
- CN203572836U CN203572836U CN201320525093.0U CN201320525093U CN203572836U CN 203572836 U CN203572836 U CN 203572836U CN 201320525093 U CN201320525093 U CN 201320525093U CN 203572836 U CN203572836 U CN 203572836U
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- rotating shaft
- capping
- magnetoelectricity
- nonmetal
- tachometer gage
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Abstract
The utility model relates to a magnetoelectric revolution meter, and the revolution meter consists of a rotating speed sensor and an indicator. The rotating speed sensor comprises a semi-closed cabinet, a coil framework disposed in the cabinet, and a coil which wound around the coil framework. The bottom of the cabinet is fixedly provided with a pin which is correspondingly connected with the coil. The revolution meter is characterized in that the opening end of the cabinet is fixedly provided with a non-metal sealing cover. A rotating shaft is disposed at the central hole of the sealing cover. One end of the rotating shaft passes through the central hole of the sealing cover, and the other end of the rotating shaft is located in the housing and fixedly provided with a magnetic steel. A plastic ring is disposed between the magnetic steel and the rotating shaft, and the plastic ring, the magnetic steel and the rotating shaft are coaxially arranged to form an all-in-one structure. The revolution meter provided by the utility model is advantageous in that an electromagnetic induction signal outputted by the sensor is stable; the revolution meter is good in linearity, is good in resistance to shock, and is high in precision; the highest precision of a sealing cover bearing in the sensor can reach C level, thereby enabling the cost of manufacture to be reduced by 80%, and enabling the service life to be increased by about five times.
Description
Technical field
The utility model relates to measurement of engine rotate speed instrument, is specifically related to a kind of magnetoelectricity tachometer gage.
Background technology
Magnetoelectricity tachometer gage is the tachometer of dynamo-electric combination, for the tachometric survey of various shipping vehicles and all mechanical rotating shafts.
As shown in Figure 1, magnetoelectricity tachometer gage is combined by speed probe and indicating gauge, sensor is connected with the rotating speed output shaft of tested rotating speed equipment, in band dynamic sensor, the permanent-magnet steel circumgyration incision magnetic line of force produces induction electromotive force, is sent to indicating gauge after electronic circuit is processed, indicates the rotating speed of tested equipment by wire.
Existing magnetoelectricity tachometer gage often has a common fault, and the electromagnetic induction signal of each sensor is inconsistent, causes the indicating gauge matching with it singly to join, and the output signal of sensor is linear poor, and indication surface scale also can only match by artificial picture system, very loaded down with trivial details; Not only time-consuming but also can not guarantee product quality in production, had a strong impact on the normal production order.Cause the sensor signal unsettled former because following two kinds of situations:
(1) magnetic property of magnet steel is unstable, time low when high, cause electric signal output to have height to have low;
(2) rotation center of magnet steel and magnetic induction coil center are inconsistent, and magnet steel itself also exists decentraction with the rotating shaft that is attached thereto, and these can affect signal output; Between the rotating shaft of existing sensor and magnet steel, conventionally adopt assembly technology, therefore, in assembling process, be difficult to guarantee that both are concentric.
To be that high precision is moving coordinates for rotating shaft and bearing, and the bearing of sensor is to adopt ball bearing or oiliness bearing conventionally, and not only manufacturing accuracy requirement is high, has increased manufacturing cost simultaneously.
In view of the existing defect of above-mentioned magnetoelectricity tachometer gage, the magnetoelectricity tachometer gage of the stable and low cost of manufacture of a kind of electromagnetic induction signal is badly in need of in this area.
Summary of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art part, a kind of magnetoelectricity tachometer gage is provided, and this magnetoelectricity tachometer gage, by a plastic hoop is set between magnet steel and rotating shaft, makes three be integrally formed structure, to guarantee right alignment, finally make the electric signal output of speed probe be consistent.
The utility model object realizes and being completed by following technical scheme:
A kind of magnetoelectricity tachometer gage, described magnetoelectricity tachometer gage consists of speed probe and indicator, described speed probe comprises a semi-enclosed casing, be located at the coil rack in described casing and be set around the coil on described coil rack, described bottom of shell is fixedly installed the corresponding contact pin that connects described coil, the openend that it is characterized in that described casing is fixedly installed a nonmetal capping, the center drilling place of described capping is provided with a rotating shaft, the center pit of described capping is run through in one end of described rotating shaft, its other end is positioned at described casing inside and is fixed with a magnet steel, wherein between described magnet steel and described rotating shaft, also there is a plastic hoop, and three is the coaxial integrative-structure arranging.
Described nonmetal capping central hole location place has the nonmetallic bearing of the described casing of sensing inside, and described nonmetallic bearing and described nonmetal capping are structure as a whole.
Described rotating shaft exposes in the part of described nonmetal capping and is arranged with steel collar, between described steel collar and described rotating shaft, is connected.
Described steel collar top is provided with a tumbler, between described tumbler and steel collar, is provided with a transition structure so that both are connected.
On the outside surface of described nonmetal capping, be provided with a fixed head, described fixed head is connected with the nut being embedded in advance in described nonmetal capping by bolt.
Scale on described indicator is for being evenly spaced layout, and the reading mark on each described scale is identical with actual speed.
The utility model has the advantages that, the right alignment of rotating shaft and magnet steel is high, and the electromagnetic induction signal that sensor is exported is stable, good linearity, and shock resistance is good, and precision is high; Capping nonmetallic bearing in sensor has replaced traditional ball bearing and oiliness bearing, nonmetallic bearing had both had remarkable wearing quality, there is again good lubricity, full accuracy can reach C level, make manufacturing cost reduce by 80%, improve five times of left and right serviceable life, there is no noise producing, and reduced equipment volume, be convenient to packed and transported.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model;
Fig. 2 is the structural representation of the utility model medium speed sensor;
Fig. 3 is the schematic diagram that the utility model medium speed covers disposed on sensor is equipped with fixed head;
Fig. 4 is the scale schematic diagram of dial plate indicator in the utility model.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, feature of the present utility model and other correlated characteristic are described in further detail, so that technician's of the same trade understanding:
As Fig. 1-4, in figure, mark 1-13 is respectively: casing 1, nonmetal capping 2, bearing 3, transition structure 4, rotor 5, steel collar 6, magnet steel 7, contact pin 8, rotating shaft 9, plastic hoop 10, fixed head 11, bolt 12, embedded nut 13.
Embodiment: as shown in Figure 1, the present embodiment is specifically related to a kind of magnetoelectricity tachometer gage, and this magnetoelectricity tachometer gage consists of speed probe and dial plate indicator, connects between the two by wire, is mainly used in measuring the rotating speed of vehicle motor rotating speed or other mechanical rotating shaft.
Be the structural representation of speed probe as shown in Figure 2,3, this speed probe has the semiclosed casing 1 of a upper end open, casing 1 is a circular cylindrical cavity, at this cavity inner wall, be provided with a coil rack, on coil rack, be arranged with coil (not shown in the drawings) herein, in the bottom of casing 1, be provided with the corresponding contact pin 8 that connects aforementioned coil, this contact pin 8 can be connected with aforesaid dial plate indicator by wire; At the upper end open place of casing 1, be fixedly installed the nonmetal capping 2 of a center drilling, the inside surface of nonmetal capping 2 is provided with the nonmetallic bearing 3 of a sensing inside cavity, during fabrication, nonmetal capping 2 and nonmetallic bearing 3 are integrated in same mould; In the direction perpendicular to nonmetal capping 2, be provided with a rotating shaft 9, rotating shaft 9 runs through the center pit of nonmetallic bearing 3 and nonmetal capping 2 from bottom to top successively, its upper end sub-fraction exposes to outside nonmetal capping 2, within its main part is positioned at cavity, between its shaft 9 and nonmetallic bearing 3, being that high precision is moving coordinates; Bottom in rotating shaft 9 is provided with a plastic hoop 10 by near caudal end part, and the outer ring of plastic hoop 10 is provided with a magnet steel 7, during fabrication, by between magnet steel 7 and rotating shaft 9, plastic hoop 10 being set, so that three is integrally formed structure, guarantees three's right alignment; In the top of rotating shaft 9 outside wall surface, in the center pit of nonmetal capping 2, be provided with a steel collar 6, between steel collar 6 and rotating shaft 9, be connected, can make rotating shaft 9 rotate along with the rotation of steel collar 6; In the top of this steel collar 6, be provided with a tumbler 5, undertaken spacingly between the two by a transition structure 4 is set, tumbler 5 is the parts that connect with between tested rotating shaft, can drive rotating shaft 9 with tested rotating shaft synchronous rotary.
As shown in Figure 3, on the top of nonmetal capping 2, be also provided with a steel fixed head 11, in nonmetal capping 2, be embedded with some embedded nuts 13, between fixed head 11 and nonmetal capping 2, by bolt 12 and coordinating of embedded nut 13, be connected and fixed.Fixed head 11 is adaptors, and for casing 1 is fixed on to tested engine, its shape can be made different variations according to the structure of tested engine, mainly contains four holes, a hole, two holes or four kinds, three holes fixed form.
As shown in Fig. 1,2,4, between dial plate indicator and speed probe, by wire, be connected.Dial plate indicator is converted to rotating speed for the magnetoelectricity signal that speed probe is sent and illustrates, scale on dial plate indicator adopts evenly spaced arranged, good linearity, 0,200,400,600,800 ... 1800,2000r/min, with respect to the scale mark of traditional unevenly spaced distribution, this kind of even scale mark spaced apart has convenient reading, directly can show the feature of reading.
As Figure 1-4, the principle of work of this magnetoelectricity tachometer gage is: the tumbler 5 on speed probe is connected with the rotating speed output shaft of tested rotating speed equipment, tumbler 5 drives rotating shaft 9 and tested rotating speed device synchronization to rotate, the magnet steel 7 circumgyration incision magnetic lines of force produce induction electromotive force, after contact pin 8, by wire, be sent to dial plate indicator, dial plate indicator indicates the rotating speed of tested equipment after electronic circuit is processed.
The principal feature of the present embodiment is:
1. high performance magnetic material (magnet steel 7) by with engineering plastics (plastic hoop 10) injection mo(u)lding, and be connected with rotating shaft 9, guarantee the same bearing of the two, through improving like this, the electric signal output of speed probe is almost the same, solved problem completely, under the temperature conditions of 20 ± 2 ℃, accuracy class can reach 1.0 grades.
2. to be that high precision is moving coordinates for rotating shaft 9 and bearing 3, and bearing is to adopt ball bearing or oiliness bearing conventionally, and not only manufacturing accuracy requirement is high, increases cost simultaneously; And pioneering nonmetallic materials substitute ball bearing or oiliness bearing in this speed probe, it adopts crystal structure highly, there is useful mechanical property, especially elastic modulus is very high, the rigidity and the skin hardness that embody it are all very high, resistance to abrasion and lower friction factor, both had remarkable wearing quality, has again lubricity; By facts have proved, manufacturing cost has reduced by 80%, and product improves five times of left and right serviceable life, and when work, substantially there is no noise.
Claims (6)
1. a magnetoelectricity tachometer gage, described magnetoelectricity tachometer gage consists of speed probe and indicator, described speed probe comprises a semi-enclosed casing, be located at the coil rack in described casing and be set around the coil on described coil rack, described bottom of shell is fixedly installed the corresponding contact pin that connects described coil, the openend that it is characterized in that described casing is fixedly installed a nonmetal capping, the center drilling place of described capping is provided with a rotating shaft, the center pit of described capping is run through in one end of described rotating shaft, its other end is positioned at described casing inside and is fixed with a magnet steel, wherein between described magnet steel and described rotating shaft, also there is a plastic hoop, and three is the coaxial integrative-structure arranging.
2. a kind of magnetoelectricity tachometer gage according to claim 1, is characterized in that described nonmetal capping central hole location place has the nonmetallic bearing of the described casing of sensing inside, and described nonmetallic bearing and described nonmetal capping are structure as a whole.
3. a kind of magnetoelectricity tachometer gage according to claim 1, is characterized in that described rotating shaft exposes in the part of described nonmetal capping to be arranged with steel collar, between described steel collar and described rotating shaft, is connected.
4. a kind of magnetoelectricity tachometer gage according to claim 3, is characterized in that described steel collar top is provided with a tumbler, is provided with a transition structure so that both are connected between described tumbler and steel collar.
5. a kind of magnetoelectricity tachometer gage according to claim 1, is characterized in that being provided with a fixed head on the outside surface of described nonmetal capping, and described fixed head is connected with the nut being embedded in advance in described nonmetal capping by bolt.
6. a kind of magnetoelectricity tachometer gage according to claim 1, is characterized in that scale on described indicator is for being evenly spaced layout, and the reading mark on each described scale is identical with actual speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525093.0U CN203572836U (en) | 2013-08-27 | 2013-08-27 | Magnetoelectric revolution meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525093.0U CN203572836U (en) | 2013-08-27 | 2013-08-27 | Magnetoelectric revolution meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203572836U true CN203572836U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320525093.0U Expired - Fee Related CN203572836U (en) | 2013-08-27 | 2013-08-27 | Magnetoelectric revolution meter |
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| CN (1) | CN203572836U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155468A (en) * | 2014-08-14 | 2014-11-19 | 新誉集团有限公司 | Magnet induction lantern ring used for measuring rate of rotating shaft of mechanical equipment |
| CN105467149A (en) * | 2015-12-09 | 2016-04-06 | 合肥同智机电控制技术有限公司 | Switch display apparatus of engine rotating speed |
| CN105759070A (en) * | 2016-03-01 | 2016-07-13 | 侯如升 | Assembly type rotating shaft speed detector |
| CN109951046A (en) * | 2019-04-04 | 2019-06-28 | 河北国创石油设备有限公司 | A kind of stator structure of oil-submersible linear lifting power device |
| CN109980889A (en) * | 2019-04-04 | 2019-07-05 | 河北国创石油设备有限公司 | A kind of Structure of mover of oil-submersible linear lifting power device |
-
2013
- 2013-08-27 CN CN201320525093.0U patent/CN203572836U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155468A (en) * | 2014-08-14 | 2014-11-19 | 新誉集团有限公司 | Magnet induction lantern ring used for measuring rate of rotating shaft of mechanical equipment |
| CN105467149A (en) * | 2015-12-09 | 2016-04-06 | 合肥同智机电控制技术有限公司 | Switch display apparatus of engine rotating speed |
| CN105467149B (en) * | 2015-12-09 | 2018-09-28 | 合肥同智机电控制技术有限公司 | The switching display device of engine speed |
| CN105759070A (en) * | 2016-03-01 | 2016-07-13 | 侯如升 | Assembly type rotating shaft speed detector |
| CN109951046A (en) * | 2019-04-04 | 2019-06-28 | 河北国创石油设备有限公司 | A kind of stator structure of oil-submersible linear lifting power device |
| CN109980889A (en) * | 2019-04-04 | 2019-07-05 | 河北国创石油设备有限公司 | A kind of Structure of mover of oil-submersible linear lifting power device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20200827 |
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| CF01 | Termination of patent right due to non-payment of annual fee |